Saw-sharpening machine.



'PATENTED JUNE 19, 1906. M. WADDELL. SAW 'SHARPENING MACHINE.

APPLIVU'ATION FILED OCT. 20, 1904.

I/VVENTOR ATTORNEYS PATENTED JUNE 19, 1906.

5 snsnis-snnnzr 2.

J. M. WADDELL. SAW SHARPENING MACHINE.

A-PVPLIOATION FILED 001220, 1904.

' IIVVENTORL fi/znJZWZZcZdeZZ ATTOR/VE V 5 SHEETS-SHBET s.

PATENTED- JUNE 19, 1906.

J'. M. WADDELL.

xmN

APPLIOATION FILED 001220, 1904.

"SAW SHARPENING MACHINE;

70k Manama xmwx \ ATTORNEYS -No. 823,830. PATENTED JUNE 19, 1906.

J. M. WADDELL. .sAw SHARPBNING MACHINE.

APPLIQATION FILED OGT.20, 1904.

5 SHEETS-SHEET a.

' Arroklvsrs ine; 823330.; f i

. invention x elates tomachines for slmrp snehgan'gs of saws as are employe ineottongins and the-like, I

' automatically-operated'upon.",7,

" be, sharpened, said cylinder being in 4 place .bv imts 15, operating upon th 'eaded' frame ale carmedsu table ways l6' to. rece1 ve b ei a, in th Pe i h p d an 'Stateof Louisiana, have invented a' new and qInipro'yed Saw-Shah enin' Machine, of which will beofprope'ir forin an inwhieh'aft erthe 'ltefelende is o tion,"in-whiehsimilar eharact rs ofreferen'ce. I indicate reorre spon'ding= parts in all the figures. "Figure ;1 is a broken front elevation of one i I section;

v Fig; 3 is'asiin'i'lar view on'the lin'e3 3of "1, Fig. 4 is a detail showing a portion of the sectien'al detail tlll ql lgl' l 1t 'eQ'sideg rinding wheel; 1 Fig.7 is 'a'similai view' ofa portion of tl ear'riag'e aQtHatiHg mechanism, Fig;

Fig. e

,ama wmma:

th 1,..J0HN wi tgaf citizen of the'Uhited States, and a resident'of thefollowingff is a ull, c ear, and'e ca'ct de sei'iption,

eningsaws," and is. espeeial'ly ap lieable' to' Th incipalfobjeetsjof the inhention are to proi ide'an apparatus b which each tooth J machinelias been set thej'entii'e gang may be p I be had; to the 'aecornpanying' tl'iawings; forniing a'pait ofthis specificaembodiinnt of; iny invention with pants in cl' iteh aetuating ln ieehanisni. Fig. 5 is a bioken' top plan' v ew ,Fi 6 is a'vertica'l 81s asideielevation, parts heihg broken aWay,,. ofhneeeentrie for noving the wheels, and

A is 'aleentifal :vertical section therellt) designates afranie, npon thefvertieal nieiiiber's of which areimoiinted brackets 1 1, ajr'lklin these brackets is journaled'a rotatable work-support or shaft 12. This shaft carries af smv-eyiimler; 1 3 ,"the saws 14' of which are to portionsoflthefshaftg" p I Upon upper horizontal members 'ofthei a table or fc irriage1 .7- ffr u ape-r 1 ts biiter faceveiftioaland ts th .dge $2 SAWQSHADIRPEMNG MAHiN-E;

Fig. ,'2 is a yerti'eal transverse secfrom "any AL XA N'ijRiliQ LoiiIsiAhK;

h speeifieatign of Letteis'lateht. a Patented June 19, 1906. l iApplicatilih iiled oetolier ZOQIQOQ- SierieI No. 22:9 253; f Y A any other siiitablel redueing projeotionsoi' dress, The shaft 21 is rotated by a "pulle v 24, comiected by abelt 5mm alarg'ei: u

. ley 26,. fixed upon. a shaft 27,'journale in suitable bearin syu'pon the upper surface of the carriage. 7 he shaftr27 ialsofcarries'a pul ley' 28,fromwhich a belt"29 extends to, a 1

larg r pulley30, mountedi pon a'longitudinal v shaft" 31, along which it'may 'b'e moved by' arms 32, depending cfl o n'the' under side of the carriage, while it is constrained to" 'rotate therewith'by key' mechanism "which will be" 1' hereinafter described.- 'Upon one-extremity;

of the lon it idinal shaftisc'arrieda fast pnl ley 33, a jacent to which aretwo loose pul liege 34' and a fourth inner-loose pulley 35.

eseipulleys a'rej conneeted by belts 36 36 L with a wide'pulle'y'37, rotatable with a shaft 38, journaled in standards 39 at the lower] part of the frame. .1 The shaft 38 also has fixed upon it a pulley 4Q, whifch may be rotated belt 41 The head is foi ced towaid th'e'wor'libyia spring 42', interposed between it and a screw 43, threaded through the u per side of the headz'aiid having a hand-w eel by whieh'it m y be rotated to, vary the tension; The

shaft 21fis' capable of some longitudinal move: I

ment' infthe head andis' held normally inward 'convenient "source" off'power' byj' a by a'sp ing' 44,'int' erposed between the inner v wall of a recess in which it is situated and acollar 45,fixedtothel-shaft. Froin thehe'ad, I

'atl-eachs'ide of the saw whi'eh isbeing opef- Y atefd upon, depends a retaining pr o ect'ion "P n ie the S fin f e Pivoted'at the carriage is an mi I l'the".saws, a're oppositebranehes 48 48, If! these branchesare jour aled alin'ed shaftsf 49','-having see'ured hpontheni side-grjin'din% i niernbersor wheels 50, flying in paralle planesfwhic h' intersect that of the throatgear" ssycomm a to both and s ec'iired u' on t an we h eee gq ltbie One of the shafts 49 is hollow, and into this I will beheld extends a projection 58 upon the other.

' Between the shafts is interposed a spring 59, which forces them apart and the inclined edges of the wheels into contact with the work. As the arm 46 is raised and lowered,

as will be later described, it becomes desirable to first move the wheels away from the saws and then restore them to their normal position, in which the s ring forces them against the work. To t 's end actuating members, here shown asbars '60, are mounted upon a bracket 61, projecting from the carriage and have two portions lying in different vertical planes with an intermediate inclined portion 62. They may be connected at their upper ends by a cross-bar 63. Secured upon each shaft at the inner side of its actuating-bar is a collar 64, having a rounded edge 65, which enables it to move readily over the inclined portion of its bar. When these collars are in contact with the lower portions of the bars, as illustrated in Fig. 1 of the drawings, the side-grinding wheels of the saws to 0 ,erate thereon; but when the saws are raised the rounded edges of the collars at once contact with the inclined portions of the bars, moving the wheels toward one another and out of contact with the saws, theybeing maintained in thisposition until lowered by the upper portions of the bars, as is shown in Fi i To permit the teethto be successively advanced to be acted upon by. the throat-grinding wheels, the supporting-shaft is provided with a sprocket-wheel 66, connected by a chain 67 with a sprocket-wheel 68, fixed upon a a short shaft 69. This shaft is rotated by outer extremities pinions worm-gearing from a shaft 71, journaled transversely of the frame, which in turn is gearing 72 with the shaft 31. The rotation imparted to the saws by this gearing is so slow that the throat-grinding wheel has am le opportunity to act, but any appreciab e movement which occurs is taken up by the sprin 44.

Toenable the wheels to act upon t e saws successively, the carriage is intermittently advanced a distance equal to the s ace between said saws by means of a s aft 73, journaled in brackets depending from the under side of thecarriage and having at its 74 74, meshing withracks 75, which extend along the u per members of the frame. Fixed to this s aft is a ratchet-wheel 7 6., having a coacting awl 77, pivoted upon an arm 78, movable a out the shaft 73. The pawl is rovided with a rearward extension 79, in which is rotatably mounted a" threaded rod 80, 81, by which it maybe turned. pon the rod moves a nut 82, to which is pivoted an bythe spring against the edges havin a head I operating-rod 83. By turning the rod the position of the nut thereon, and consequently the throw imparted to the ratchet mechanism, may be varied. The relation of the pawl and its supporting-arm to the ratchetwheel is such that a downward pull upon the operating-rod brings the pawl into coaction with the ratchet-teeth to rotate the wheel and shaft 73, and when the rod is moved upwardly the pawl swings away from the teeth against a stop member 83, carried by the arm, for a sufficient distance to disengage it and allow its rearwardmovement without disturbing the ratchet-wheel. The 0 erating-rod is braced against lateral play y inclined members 84, extending from the under side of the carriage and meeting in a sleeve through which the rod moves and has at its lower end a strap 85, surrounding an eccentric 86, rotatable with the shaft 87. At the same time the eccentric is permitted longitudinal movement on the shaft by means of a groove 88, extending along said shaftand having opposite it, in the eccentric, a recess 89, this groove-recess receivin a set of balls 90, located partly in each an retained within the eccentric by side plates 91. The eccentric also has annular chambers 92, separatedby a wall 93, in which 0 erate sets of balls 94. By this ex edient the shaft and eccentric are com elle to rotate together, while very free ongitudinal movement of the latter is permitted. The same method of mounting is also preferably applied to the pulley 31.

The shaft 87 is rotated by a gear 95, with -which meshes a pinion 96 upon the shaft 38.

To secure intermittent operation, the gear 95 is loose u ber 96 0 a j aw-clutch, the companion member 97 of which is keyed to the shaft for 10 -itudinal movement by the ball device just scribed or any other suitable arrangement. With a groove in the member 97 coacts an arm 98 upon a lever 99, which is so held by a Wei ht 100 that the clutch members are normal y separated.-

one extremity of t ever 99 rests a lever101,

' and with the opposite end of this last-named lever contacts a small lever 102, fulcrumed upon the bracket 11. Fixed upon the worksupporting shaft is a pair of arms 103 103, having between them a movable contact member or arm 104,which is forced against one of the arms in the direction of rotation of the work by, a spring 105 and which will contact with the adjacent end 01 the lever 102, bein permitted to slip by the same when its work as been completed by virtue of the spring. Secured upon the shaft 87 adjacent to the lever 101*is a disk 106, in which is a depression 107, which the end of the lever 99 may enter.

pon each rotation of the work-support its contact projection coacts with the lever system and. first moves the lever 99 out of the on the shaft and carries one memainst the upper edge of 113? disk'sdepre ssion and then brin s. the clutch members into'engagementi ,T eshaft'87 at once begins its rotation, movingfthe depressi on away rom -the lever 99, and thus-locking the clutch members before the contact'promovement of the carriage at thepro'per point. .Before shuting the, carriage the grinding- 'wheels must be moved from the saw-teeth to allow, this, andlfor thispurposethe rod. 83'

'20 has attachedto itan arm 108, which isconnected by .a link 109 with alever 110, con veniently fulcrumed upon the fixed arm 18;

One arm 111, of this lever, extends. beneath a cross-bar of the head,,while asecond arm .112.

e 5 is connected, by a-link113 with the arm 48.

' The ratios .01 the arms ofthe levers arefsuch' that before the carriage. moved along the.

work the wheels arelifted-from the saws, the movement; being. sufficient to also clear, the

0'retaining-projections 45; To limitthe "downward movement of the wheels, a stop member is preferably provided, which is here,

. .sh'own as a block 114, whichmay be of; copper and which preferablycontains a softmetal; filling 115 for contact with the sawte'eth This block is supported by a linkul 1 6.,

pivoted to a projection: 1163 upon the block and to'the arm 1110f the lever and is retainedagainst movement circumferentially 4o of the sawby'a link 117,'pivoted to the car' riage. With theprojection of the stop member will contact a roll 1'18, carried-[upon a stud at the end of the, shaft of the throatrinding wheel and be held from moving too ar downwardly; The relation of the wheel. to the saws may be varied bysuitable screws,- which adjust the position of'abar; 119 upon 5 which the projection1'16 is supportedn. I

. Means must also be provided for raising the. throat-grinding wheel from the saw upon-the advance of each tooth, .This is here. shown as consisting of a shafta120, j ournaled in thearm 18and having atitS-outerend an-arm.

.121, preferably rounded at its outerextrem- 5 5 ity and-contacting' with the'head to raise it. upon the ways independentlyfofthe lever. The opposite end of the shaft 120 has 110. fastupon it..a crank 122-, to which is articue lated arod -1;23,,terminatingin a strap 124.1 This strap surrounds an eccentric 125, car-- ried byitheshaft 2?,the throw ofwhich ecv centric is sufficient toraise the throat-grind wheel out ofthe tooth 1 hen the rr-iage reaches. the end of its 6 3 travel or aftertheslastisaw has beenoperated The resultant throw of the eccen' I trio is. sufficient to advance: the carriage up through the ratchet mechanism an'amount Y "e ual-to. the distance between adjacent saws.- g Vl hcn thistravel and the rotation of the shaft;

87 have beencompleted, the depression 107 reachesthc lever 99, which enters it, separat- 15ing"the,clutch members and stopping the they moving from saw to saw .with -the gummer." .After theentiregang has been comupon, it contacts with eleven '126,'fulcrumed upon the frame and connected'bya rod 127,.

with a-lever' 128, mounted'at the opposite. end of the frame. :This. portion or the'rod carries. 4

a beltshifting bar 129, having a pair of r o.- 'ec'tions130130, situated at each side 0- the elt 36 and a third projection. 131-at the outer side ofsthe belt '36. The loose pulley, 35lha's upon its huba bevel-gear 132, mesh-.- ingwithasimilar gear. 133. fast. .upon .a shaft- 134, journaled transversely of the frame. This shaft also hasfixed upon it agsp'rocket wheel 135 over, which and over sprocketwheels 136 rotatable upo'ngthc. frame.,-passesa chain 137, which is connected at its opposite ends t the'carriage. The contact of-the ca'r-* riage 1th the-lever 126, .10' crating through the belt-shifter, moves the lielt's 3.6 and. 3.6%; so that theyengage theloose pulleys 34 and 35. The latter, by. the rotation ofl-thebeveh' caring and the conse uent pull of the chain,.

raws the carria ebac to the starting-point Hereit strikes t exlever 128, when the'inner: proi'e'ction 130 will move the belt -36.from' the pill ey 35 to thepulley .34, leaving :the belt.

36 upon the companion pul1ey3 1, and :thus

stoppingthemachinet In using the Inachinethe g'anguof saws to-; be sharpened: is placedupon the. work-sup.- port and the grinding-wheels adjusted .-to

tightpulley 33,. which through the inter- 5 I The gummer operates about the entire pe-.

automatic ally transferred to the. second! As this continues'the. side-grinding wheels come: J

' posed gearing rotates the =gi'rinding-wheels; I

mo riphery of the first saw and is thenraised and. 1

into. operation andv completethe-sharpening,

pletedlthe carriage is automatically returned to-its inital point and: stopped in readiness torepeat its work. It will be seen that not only I is the sharpening carried out-without manual intervention,- but each tooth has imparted to it acorrect' contour, in which "the throat presents a square; operating surface, which will give a the maximum strength, enabling it to I pullofi the lintwithoutgcutting.-,

Having'th s described my invention,-':Ij claimasnewand desire to secureby- Letters Patent .z Y .ig -1.1Asatv sharpening machinecomprisin' a rotatablei workssupport,' s plurality of side grinding wheels landa throat-grinding iwheel; a-single .means for simultaneously moving each ofthe grinding wheelsftoward and front the work-support,= means FfQr simultaneously moving all of the grinding-wheels longitudinally of the work-support at the end of 'acom plete rotation of said support, and means controlled by therotation:of the;Work-support for actuating saidlast-named means-=" 2. Asaw-sharpeningmeans eompris'ingai 9 properly operate-thereon. ,The belt-.36 is: then moved byhand'or: otherwise uponythe rotatable work-support, a movable grinding aneans on the work-s tatable in bearings movably mounted upon the carriage, means for member, means for moving the grinding member toward and from the work and pport for controlling said'inovements.

3. A saw-sharpening machine comprising a rptatable work-support, a movable grinding member, means controlled by the movement of the "work-support for moving the grinding member toward and from the work, and

means for fixing the position of the grinding member'after its movement. 4. Asaw-sharpening machine comprising a side grinding member, a throat grinding member, means for simultaneously moving said grinding members from the work, and independent means for moving the throatgrinding member.

5. In a saw-sharpening machine, the combination of a rotatable work-support, a carriage, a-pluralityof side-grinding wheels rosimultaneously moving the bearings 'to and from the work-support, and means controlled by the rotation of the work-support for moving the carriage longitudinally 'plete rotation of the said support.

6. In a sawrsharpening machine, the combination witlia work-support, of a carriage I PIOVldGdWith Wa S and movable longitu 'f'nally of the Wor -u'ponthe Ways, a shaft longitudinally -support, a head sliding journaled in-the head, a grinding-wheel carried by the shaft, means for intermittently moving the head in the ways, and means having av lost-motion connection with the head for limiting the movement thereof in the direction of the support.

7. In a saw-sharpening machine, the combination with a rotatable work-support, of a carriage provided with ways and movable of ,the support, a head sliding upon the ways toward and from the support, a. shaft journaled in' the head, a grinding wheel carried by the shaft, means for moving the head upon the advance of each tooth of receive a plurality of saws,

the saw, means for moving the carriage at the end of a complete rotation of the worksupport, and means whereby the rotation of the work-support may control said carriagemoving means.

8; In a saw-sharpening machine, the combination with a rotatable support adaptedto of a traveling carriage provided with Ways, a head sliding upon the ways, a shaft journaled in the head, a grinding-wheel carried by the shaft, continuously-rotatable means .for moving the head upon the advance of each 'tooth of the saw, and intermittently-operating means for moving said head for each rotation of the saws.

9. In a saw-sharpening machine, the combination with'a work-support, of a carriage provided with ways, a head sliding upon the thereof at the end of a combination with thereon, gearing associated with the mg-wheel carried by the shaft, means for moving the head, a member for limiting the movement of the head, a link connecting said limiting member with the carriage and a lost-motion connection between the head and the moving means.

10. In a saw-sharpening machine, the combination with a worksupport, of a carriage, a carrier movable upon the carriage, a shaft journaled in the carrier and longitudinally movable therethrough, a grinding-wheel fixed to the shaft, a collar carried by the shaft, and an actuating member projecting from the carriage and with which the collar contacts.

11. In a saw-sharpening machine, the combination with a work-support, of a carriage, a carrier movable upon the carriage, a shaft journaled in the carrier and longitudinally movable therethrough, a grinding-wheel fixed to the shaft, a collar carried by the shaft, and an actuating member projecting from the carriage, and with which the collar contacts, sakl abtuating member having contact-faces lying different planes.

12. In a saw-sharpening machine, the combination with a work-support, of a carriage, a carrier movable upon the carria e, alined shafts journaled in the carrier and longitudinally movable therethrough, tension means for effecting'the movement of. the shafts, and grinding-wheels fixed to the shafts.

- 13. In a saw-sharpening machine, the combination with a work-support, of a carriage, a carrier movable upon the carriage, alined shafts j ournaled in thecarrier and longitudinally movable therethrough, grinding-wheels fixed to the shafts, and means for forcing the shafts apart.

14. In a saw-sharpening machine, the combination with a work-support, of a carriage, a carrier movable upon the carria e, alined sliafts journaled in the carrier and longitudinally movable therethrough, automatic means for effecting the movement, and a spring interposed between the shafts.

15. In a saw-sharpening machine, the'eombination with a work-supporting shaft, of a carriage, a grinding member mounted upon the carriage, a driving-shaft, a loose pulley on the driving-shaft, a connection between the loose pulley and the carriage, a powershaft and means whereby the power-shaft and the loose pulley may be connected and disconnected by the movement of the carriage.

.16. In a saw-sharpening machine, the coma work-supporting shaft, of a carriage, a grinding member mounted u on the carriage, a driving-shaft, a loose p lulley oose pulley, a chain connecting the gearing and the carriage, a powershaft, and means whereby the power-shaft and the loose pulbination with a work:sup

the be t for shifting the same to the fast pulley', and means whereby the belt-shifter may be operated by the movement of the carriage. 18.-In a saw-sharpening machine, the com bination with a work-supporting shaft, of a carriage, a grinding member mounted u on the carriage, a driving shaft, a fast pu ley and a plurality of loose pulleys-"thereon, connections betweenone of the loose pnlleys and the earriage, a ower-shaft belt's connecting the "power-sha shifter associated with the belts and having a lurality of projections adjacent to the puley to which the carriage is conneoted,zand a sin le projection adjacent to the fast pulley an means whereby the belt-shifter may be operated by the movement of the carnage. 19. In a saw-sharpening machine, the combination with a rotatable work-su port, of a i a. s aft from movable grinding member,

and the pulleys, a belt-f hich the. grindini member is moved, a

clutch controlling t work-support. p

" 20. 'Ina saw-sharpening machine, the combination 'withlazrotatable work-su port, of' a member, a s aft frommovable grindi'n which the grind i n clutch controlling t means, for efiectmg an en member is moved, a e rotation of the shaft,- 'agement of the cliitch by the movement of t e-work- 'support,

and gl'lravity-actuated means for releasing the clutc I 21. In a s'aw-sharpening machine, the combination with a rotatable work-su port, of a e'rotation of the shaft, and means for operating the clutch by the movable grmdingQmember, a s aft .from

whichthe grindin member. is 'moved, a-

clutch'controlling t e rotation-of the shaft, means for. effectm an engagement of the clutch byjthe woi k-support, gravit '-actuated means for releasing the clutcli, and means rotatable with the clutch forcontrollin its movement. 1

i n testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' JOHN M,

, I WADDELL,

Witnesses:

FRANK AUBREY, Ones. G. ADAMS. 

